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2.
The sounds made by the mouth when a woman performs fellatio on a man.
Sally gave me head last night and was meatboxing beautifully.
by ctre6 July 10, 2012
 
1.
The act of beatboxing with a penis in your mouth.
Richard had many meatboxing sessions with Max.
by DeadeyeSpider May 19, 2010
 
3.
the guttural and feral noises one makes when eating an exceptionally good piece of meat such as steak, chicken, etcetera.
Jim: Dude how'd your date go?
John: It went great until I started meatboxing.

Jim: Ooooh dude, I told you, you gotta control that!
John: I couldn't help it. The ribs were delicious!
by boombox666 September 27, 2011